0 0 4 3 x y 2 8 3 10 6 12 8 14 10 18 4 6 6 8 8 12 10 14 12 16 6 2 7 4 9 6 10 8 13 12 8 2 8 3 10 5 11 8 13 10 Linear https://acme.com/archive/image.tif image/tiff Red Channel